Diablo 9-Piece Bi-Metal Hole Saw Set Diablo 9-piece hole saw kit features 5 bi-metal hole saw cups and 4-piece Snap-Lock Plus mandrel system for quick and easy hole saw changes for maximum job performance. These new hole saws provide ultimate cutting length of 2-3/8 In. to bore deeper holes in a single pass. Features Variable Tooth Design for faster cuts. Universal Snap-Lock Plus mandrel system fits all hole saws in the range, including carbide tipped hole saws. Tool-free plug ejection for fast material removal. For use with wood and metal. Sizes include 7/8 In., 1 In., 1-1/8 In., 1-3/8 In., 1-1/2 In., 2 In., 2-1/8 In., 2-1/2 In., 2-9/16 In., Snap-Lock Plus mandrel, pilot bit, adapter nuts. Material Bi-Metal, Pieces In Set 9 Pcs., Pkg Qty 1, Package Type Box